57820072 has 16 divisors (see below), whose sum is σ = 108530100. Its totient is φ = 28878720.

The previous prime is 57820069. The next prime is 57820121. The reversal of 57820072 is 27002875.

It can be written as a sum of positive squares in 2 ways, for example, as 56640676 + 1179396 = 7526^2 + 1086^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5172 + ... + 11932.

Almost surely, 2^57820072 is an apocalyptic number.

It is an amenable number.

57820072 is a deficient number, since it is larger than the sum of its proper divisors (50710028).

57820072 is a wasteful number, since it uses less digits than its factorization.

57820072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836 (or 7832 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 57820072 is about 7603.9510782224. The cubic root of 57820072 is about 386.6869740953.

The spelling of 57820072 in words is "fifty-seven million, eight hundred twenty thousand, seventy-two".